scope:

This standard specifies requirements for the connection of washing machines, dishwashers and condensation-type tumble dryers to the water mains having a water pressure not exceeding 1 MPa for prevention of backsiphonage of non-potable water into the water mains and flooding due to failure of hose-sets. This standard may also be applied to the connection of other appliances as long as the relevant safety standard refers to it but modifications may be necessary. NOTE 1 - This standard covers the connection of appliances in shops and communal flats, for the use by staff or residents. Note 2 - This standard does not apply to -appliances used for dry cleaning; -appliances for medical purposes; -appliances intended for industrial purposes; -water heaters that are an integral part of the water supply system; -water coolers that are an integral part of the water supply system. NOTE 3 - The connection of the appliance to the water mains may be temporary or permanent. NOTE 4 - When reference is made to the water mains, water supplied from a cistern or similar system is also included. NOTE 5 - Many countries have requirements concerning the prevention of contamination of potable water as a result of contact with unsuitable materials upstream of a safety device.